Upwork vs Toptal vs Agencies: Where to Hire an AI Engineer in 2026

Upwork is an open marketplace. Anyone can create a profile, so quality ranges from outstanding to unusable. That is the main tradeoff: the widest talent pool and price range, but you vet candidates yourself.

How fees work in 2026 (confirm current figures before you rely on them):

• Client marketplace fee: charged on top of every payment to the freelancer. It depends on your plan and payment method, and is commonly reported in the low single digits on the Basic plan. Verify on Upwork's client pricing page.
• Contract initiation fee: a small one-time fee when you start a new contract. Verify the current range.
• Freelancer service fee: freelancers pay a variable fee per contract. Most price this into their rate, so you are indirectly paying it too. Details are in Upwork's help center.

What helps on Upwork: filter for Top Rated or Expert-Vetted badges, high Job Success Scores, and real earnings in AI-related work; read the client feedback, not just the star rating; and always run a small paid test task before a big contract.

For the full process, see my step-by-step Upwork hiring guide, and for rates, what AI engineers charge on Upwork.

Choose Upwork if: you are comfortable evaluating technical candidates (or have someone who is), you want direct relationships, and cost efficiency matters.

Toptal positions itself as a network of the top 3% of freelance talent, screened through a multi-stage process. Instead of browsing profiles, you describe your needs and Toptal proposes matches.

How it works: you talk to Toptal about the role and they suggest candidates, typically within days; a refundable deposit is usually required to start; new engagements come with a trial period during which you do not pay if it is not a fit; and rates are higher than typical Upwork rates and are not listed publicly. Confirm deposit and trial terms directly with Toptal, since they change.

The tradeoffs: you are paying a premium for screening, which can be worth it if you cannot evaluate AI engineers yourself. The top 3% screen tests general engineering ability, communication, and professionalism; it does not guarantee experience in your specific AI problem, so you still need to ask about production RAG, agents, or whatever you are building. You also have less direct control over who you are matched with.

Choose Toptal if: you have budget, no internal technical person to vet candidates, and want a safety net if the first match does not work.

An AI development agency gives you a project manager, one or more engineers, and often design and QA. You buy an outcome rather than hours from an individual.

• Highest cost. Agency margins cover sales, management, and bench time.
• Slower start. Expect discovery calls, proposals, and contracts before work begins.
• Staffing risk. The senior person in the sales call may not be the person writing your code. Ask who exactly will work on your project.
• Good for larger, well-defined scopes where you need several roles at once.

Choose an agency if: your project needs a full team (backend, frontend, ML, design), you have a clear scope and budget, and you would rather manage one vendor than several freelancers. Even then, starting with a defined proof of concept before a big contract reduces risk.

• Pre-seed or seed startup, first AI feature or MVP: Upwork or a direct freelancer. You get the most senior output per dollar, especially if you hire a part-time AI engineer instead of a full-time one.
• Funded startup, no technical co-founder, need to hire fast: Toptal's screening can save you from a bad hire you could not have spotted yourself.
• Larger company, multi-role project, defined scope: an agency, as long as you confirm who is actually doing the work.

Whichever you choose: run a paid test task, check production experience specifically, and scope your project with me first so you know what a reasonable quote looks like.